private Analyzer getAnalyzerAtField(
String field, @Nullable Map<String, String> perFieldAnalyzer) {
MapperService mapperService = indexShard.mapperService();
Analyzer analyzer;
if (perFieldAnalyzer != null && perFieldAnalyzer.containsKey(field)) {
analyzer = mapperService.analysisService().analyzer(perFieldAnalyzer.get(field).toString());
} else {
analyzer = mapperService.smartNameFieldMapper(field).indexAnalyzer();
}
if (analyzer == null) {
analyzer = mapperService.analysisService().defaultIndexAnalyzer();
}
return analyzer;
}
